JEE Advanced 2008 Physics question
STATEMENT-1: In a Meter Bridge experiment, null point for an unknown resistance is measured. Now, the unknown resistance is put inside an enclosure maintained at a higher temperature. The null point can be obtained at the same point as before by decreasing the value of the standard resistance.
STATEMENT-2: Resistance of a metal increases with increase in temperature.
Answer: (D)
Solution
For null point to remain same, X/R must stay constant. Heating increases X, so R must also
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